public void GetDescriptors_LocatesAddTagHelperCodeGenerator()
{
// Arrange
var resolver = new TestTagHelperDescriptorResolver();
var addOrRemoveTagHelperSpanVisitor = new AddOrRemoveTagHelperSpanVisitor(resolver, new ParserErrorSink());
var document = new MarkupBlock(
new DirectiveBlock(
Factory.CodeTransition(),
Factory.MetaCode(SyntaxConstants.CSharp.RemoveTagHelperKeyword + " ")
.Accepts(AcceptedCharacters.None),
Factory.Code("\"something\"").AsAddTagHelper("something"))
);
var expectedRegistration =
new TagHelperDirectiveDescriptor("something", TagHelperDirectiveType.AddTagHelper);
// Act
addOrRemoveTagHelperSpanVisitor.GetDescriptors(document);
// Assert
var directiveDescriptor = Assert.Single(resolver.DirectiveDescriptors);
Assert.Equal(expectedRegistration, directiveDescriptor, TagHelperDirectiveDescriptorComparer.Default);
}
public void GetDescriptors_LocatesTagHelperCodeGenerator_CreatesDirectiveDescriptors()
{
// Arrange
var resolver = new TestTagHelperDescriptorResolver();
var addOrRemoveTagHelperSpanVisitor = new AddOrRemoveTagHelperSpanVisitor(resolver, new ParserErrorSink());
var document = new MarkupBlock(
Factory.Code("\"one\"").AsAddTagHelper("one"),
Factory.Code("\"two\"").AsRemoveTagHelper("two"),
Factory.Code("\"three\"").AsRemoveTagHelper("three"));
var expectedRegistrations = new TagHelperDirectiveDescriptor[]
{
new TagHelperDirectiveDescriptor("one", TagHelperDirectiveType.AddTagHelper),
new TagHelperDirectiveDescriptor("two", TagHelperDirectiveType.RemoveTagHelper),
new TagHelperDirectiveDescriptor("three", TagHelperDirectiveType.RemoveTagHelper),
};
// Act
addOrRemoveTagHelperSpanVisitor.GetDescriptors(document);
// Assert
Assert.Equal(expectedRegistrations,
resolver.DirectiveDescriptors,
TagHelperDirectiveDescriptorComparer.Default);
}
/// <summary>
/// Returns a sequence of <see cref="TagHelperDescriptor"/>s for tag helpers that are registered in the
/// specified <paramref name="documentRoot"/>.
/// </summary>
/// <param name="documentRoot">The <see cref="Block"/> to scan for tag helper registrations in.</param>
/// <returns></returns>
protected virtual IEnumerable <TagHelperDescriptor> GetTagHelperDescriptors([NotNull] Block documentRoot)
{
var addOrRemoveTagHelperSpanVisitor = new AddOrRemoveTagHelperSpanVisitor(TagHelperDescriptorResolver);
return(addOrRemoveTagHelperSpanVisitor.GetDescriptors(documentRoot));
}
